In Search For The Perfect Light Sail To Propel Spacecrafts To The Alpha Centauri System https://t.co/1AVEJrPURL https://t.co/1AVEJrPURL
— iPhoneMaster13 (@iPhoneMaster13) October 14, 2016
from Twitter https://twitter.com/iPhoneMaster13
October 13, 2016 at 11:06PM
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